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Exploring coherent elastic neutrino-nucleus scattering using reactor electron antineutrinos in the NEON experiment

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Title
Exploring coherent elastic neutrino-nucleus scattering using reactor electron antineutrinos in the NEON experiment
Author(s)
Jae Jin Choi; Eun Ju Jeon; Kim, J.Y.; Kyungwon Kim; Sung Sung Kim; Kim, S.K.; Yeongduk Kim; Young Ju Ko; Koh, B.C.; Ha, C.; Park, B.J.; Seung Hyun, Lee; In In, Lee; Hye Jin, Lee; Lee, Hyun Su; Lee, Jaison; Yoo Min, Oh
Publication Date
2023-03
Journal
European Physical Journal C, v.83, no.3
Publisher
Institute for Ionics
Abstract
Neutrino elastic scattering observation with NaI (NEON) is an experiment designed to detect neutrino-nucleus coherent scattering using reactor electron antineutrinos. NEON is based on an array of six NaI(Tl) crystals with a total mass of 13.3 kg, located at the tendon gallery that is 23.7 m away from a reactor core with a thermal power of 2.8 GW in the Hanbit nuclear power complex. The installation of the NEON detector was completed in December 2020, and since May 2021, the detector has acquired data at full reactor power. Based on the observed light yields of the NaI crystals of approximately 22, number of photoelectrons per unit keV electron-equivalent energy (keVee), and 6 counts/kg/keV/day background level at 2–6 keVee energy, coherent elastic neutrino-nucleus scattering (CEνNS) observation sensitivity is evaluated as more than 3σ assuming 1-year reactor-on and 100 days reactor-off data, 0.2 keVee energy threshold, and 7 counts/keV/kg/day background in the signal region of 0.2- 0.5 keVee. This paper describes the design of the NEON detector, including the shielding arrangement, configuration of NaI(Tl) crystals, and associated operating systems. The initial performance and associated sensitivity of the experiment are also presented. © 2023, The Author(s).
URI
https://pr.ibs.re.kr/handle/8788114/14248
DOI
10.1140/epjc/s10052-023-11352-x
ISSN
1434-6044
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
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